Scores of Iran-backed fighters to join Hezbollah in fight against Israel

Thousands of fighters from Iran-backed groups in the Middle East are ready to come to Lebanon to join with the militant Hezbollah group in its battle with Israel if the simmering conflict escalates into a full-blown war, officials with Iran-backed factions and analysts say.

Almost daily exchanges of fire have occurred along Lebanon's frontier with northern Israel since fighters from the Hamas-controlled Gaza Strip staged a bloody assault on southern Israel in early October that set off a war in Gaza.

The situation to the north worsened this month after an Israeli airstrike killed a senior Hezbollah military commander in southern Lebanon. Hezbollah retaliated by firing hundreds of rockets and explosive drones into northern Israel.

Israeli officials have threatened a military offensive in Lebanon if there is no negotiated end to push Hezbollah away from the border.

Over the past decade, Iran-backed fighters from Lebanon, Iraq, Afghanistan and Pakistan fought together in Syria's 13-ye